发明名称 |
BIODEGRADABLE ARTICLES BASED ON STARCH AND PROCESS FOR PRODUCING THEM |
摘要 |
Formed articles comprising destructurized starch, an ethylene-acrylic acid copolymer and a product of the interaction of starch and ethylene-acrylic acid copolymer wherein the starch not bound to t he copolymer is in the form of particles having sizes below 1 micron. The water content of such articles is lower than the one usually present in the starch. Said formed articles can also contain urea in an amount no higher than 30 % by weight and/or ammonia in an amount not higher than 0.5 % by weight. The process for obtaining such articles comprises the steps of extruding starch, an ethylene-acrylic acid copolymer and optionally water, urea and/or ammonia at a temperature ranging from 90 to 150.degree.C, reducing the water content to values lower than 6 % by weight and injection molding or extrusion blowing the resulting composition.
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申请公布号 |
CA2028130(A1) |
申请公布日期 |
1990.09.10 |
申请号 |
CA19902028130 |
申请日期 |
1990.03.08 |
申请人 |
BUTTERFLY S.R.L. |
发明人 |
BASTIOLI, CATIA;BELLOTTI, VITTORIO;DEL GIUDICE, LUCIANO;DEL TREDICI, GIANFRANCO;LOMBI, ROBERTO;RALLIS, ANGELOS |
分类号 |
A61F13/15;C08B30/12;C08K5/16;C08K5/21;C08L1/00;C08L3/00;C08L3/02;C08L23/08;C08L33/04;C08L33/06;C08L101/16;(IPC1-7):C08L3/02 |
主分类号 |
A61F13/15 |
代理机构 |
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地址 |
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